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Diffusion approach for community discovering within the complex networks: LiveJournal study
Zakharov, Pavel - In: Physica A: Statistical Mechanics and its Applications 378 (2007) 2, pp. 550-560
The diffusion approach of concentration mapping is used to discover communities in the directional friendship network … diffusion of a virtual substance immersed in such a network as in a multi-dimensional porous system. By analyzing concentration … profiles at intermediate stage of the diffusion process the well-interconnected cliques of users can be identified as nodes …
Persistent link: https://www.econbiz.de/10011060521
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Modelling hierarchical and modular complex networks: division and independence
Kim, D.-H.; Rodgers, G.J.; Kahng, B.; Kim, D. - In: Physica A: Statistical Mechanics and its Applications 351 (2005) 2, pp. 671-679
for real-world networks. …
Persistent link: https://www.econbiz.de/10011062853
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Fractal-type relations and extensions suitable for systems of evolving polycrystalline microstructures
Gadomski, A - In: Physica A: Statistical Mechanics and its Applications 274 (1999) 1, pp. 325-332
We report on two possible physically justified situations concerning the evolution of polycrystalline microstructures. The first is an observation that a polycrystalline microstructure formation process, considered as a random walk in the space of the crystallites’ sizes, can be equivalent to...
Persistent link: https://www.econbiz.de/10010872937
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The double Caldeira–Leggett model: Derivation and solutions of the master equations, reservoir-induced interactions and decoherence
Cacheffo, A.; Moussa, M.H.Y.; de Ponte, M.A. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 11, pp. 2198-2217
In this paper we analyze the double Caldeira–Leggett model: the path integral approach to two interacting dissipative harmonic oscillators. Assuming a general form of the interaction between the oscillators, we consider two different situations: (i) when each oscillator is coupled to its own...
Persistent link: https://www.econbiz.de/10010873085
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A quantum field theory of diffusion near the liquid-glass transition
Kitamura, Toyoyuki - In: Physica A: Statistical Mechanics and its Applications 245 (1997) 3, pp. 543-559
transition yields the hopping matrix which shows the Vogel-Fulcher law. The diffusion is determined by the randomness of the … eigenfrequencies and the hopping matrices. The diffusion coefficient is proportional to the first or third power of the …
Persistent link: https://www.econbiz.de/10010873189
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Thermal relaxation for the Relativistic Ornstein–Uhlenbeck Process
Debbasch, F.; Espaze, D.; Foulonneau, V.; Rivet, J.-P. - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 15, pp. 3797-3804
The thermal relaxation of a relativistic particle diffusing in a fluid at equilibrium is investigated through a numerical study of the Relativistic Ornstein–Uhlenbeck Process. The spectrum of the relaxation operator has both a discrete and a continuous component. Both components are fully...
Persistent link: https://www.econbiz.de/10010873277
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Tracer diffusion in the presence of segregating obstacles
Rickman, J.M. - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 3, pp. 456-462
Tracer diffusion in an alloy in which the trajectories of one of the species is biased is examined as a model of mass … free area available for diffusion. …
Persistent link: https://www.econbiz.de/10010873281
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On the span of Brownian motion in a field in one dimension
Makhnovskii, Yu.A.; Maslova, M.E.; Berezhkovskii, A.M. - In: Physica A: Statistical Mechanics and its Applications 225 (1996) 2, pp. 221-234
results indicate that at very short times the dominant effect is diffusion while at very long times the field plays the …
Persistent link: https://www.econbiz.de/10010873409
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Diffusion described with quantum Langevin equation in tilted periodic potential
Duan, Hong-Guang; Liang, Xian-Ting - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 22, pp. 5404-5410
In this paper, diffusion behavior of Brownian particles moving in a 1D periodic potential landscape has been … experimental diffusion process. …
Persistent link: https://www.econbiz.de/10010873466
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Rate theory for one-dimensional diffusion
Borodin, V.A. - In: Physica A: Statistical Mechanics and its Applications 260 (1998) 3, pp. 467-478
diffusion in an anisotropic material with defect sinks. In the limiting case of one-dimensional diffusion, accurate expressions …
Persistent link: https://www.econbiz.de/10010873538